Not many, it doesnt come w/ bottomline asa
i won this gun in a tourney and said hell, y not shoot it some before it goes on ebay (as do all guns i win in tourneys) so i take it out, hook up the hyperflow and start RIPPING strings of paint. i must admit, i was thoroughly surprised. i went home and chekced the prices on the net and found that this beauty was selling for only $70! i was amazed. M3 has definitely hit the spot with a great entry level marker.
I say if a new, cheap gun is in the cards for you, go for it!